Why Don't Multiple GPUs Scale Properly?





Multi-GPU setups like SLI and CrossFire can deliver performance you just can’t get with a single card, but two GPUs doesn’t always mean twice the framerate…

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33 thoughts on “Why Don't Multiple GPUs Scale Properly?

  • Maybe if they would release gen 4 pcie it would help as it already exist on proprietary motherboards and chips.. Not even talking linux but totally open-source.. They love to hold us back… hah, or maybe it's case so many people are sue happy of expect more then they paid for… however to play Devils advocate here for a moment and to speak from my side of the fence as in how i see it… then don't want us to be able to buy three cards of the mid range as we get paid, as they tried it and in one case it killed their top card, hint, was the 9 series… #X79 #Even #StiLL …to bad AMD doesn't stick with its CrossFire and stop following Nvidia… if they perfected it "enough" with pcie advancing, they could really have something there as tons of people would rather but the middle of the road high end card and then a other and maybe another eventually beating out the top tier card or at least matching it as they get paid weekly or bi weekly… then if one fail, still have one to play, or two, or three, depending.. Heck, or five with pcie gen 4 on the horizon… its just as good of thinking as finding the happy medium. Solo card to Nvidia and price it right to sell… AMD, do both!… cause it looks cool too, you think kids wouldn't still buy them up or envy those rigs and be willing to pay for a larger psu, electric bill is the least of most enthusiasts money and especially kids.. However I get it at least from Intel xeon dominant side with servers needing to be more efficient and more efficient… but that is why there are two markets…

  • Maybe if they would release gen 4 pcie it would help as it already exist on proprietary motherboards and chips.. Not even talking linux but totally open-source.. They love to hold us back… hah, or maybe it's case so many people are sue happy of expect more then they paid for… however to play Devils advocate here for a moment and to speak from my side of the fence as in how i see it… then don't want us to be able to buy three cards of the mid range as we get paid, as they tried it and in one case it killed their top card, hint, was the 9 series… #X79 #Even #StiLL

  • So I have like 60 years supply of razors from dollar shave club now.. What am I going to do when I use one razor per year as I only shave one every 3 months.

    Thank Linus, anything else should I buy?

    LOL j/k Not about the frequency of how often I shave. I'm Asian afterall…

    BTW Keep up the great work.

  • if instead of activating the SLI I connect two graphics (say two gtx1080) I connect them on the board and with some one pip switch we divide the screen into two equal parts and then activate nvidia surround or whatever it is called eh try to make each graphic renderize what each one would see as two screens but really it was one divided in half, obviously all this in gaming

  • I’m actually in the process of building a new rig and was going to buy two graphics cards a high-end one to power a 4K HDTV for gaming and another lower end graphics card to power a regular 1080 P monitor as a dual monitor set up so the high-end one doesn’t have to do all the work power and both of them is this be a good idea or am I also wasting my money?

  • not on the topic but HEEEEEEEEEELP!!!!!!!
    the scenario is this:
    I7 6900 k, GTX 1080 on primary (windows use it as default), RTX 2080 TI on secondary.
    Problem: How do i assign my games to run on RTX 2080 TI?
    Thanks

  • GPUs not showing good scaling, as well as those with an inability to get 3-way or 4-way SLI working properly on Pascal GPUs can purely be attributed to a lack of knowlege in the use of SLI compatibility bits in Nvidia inspector, as well as ignorance to proper usage of Alternate frame rendering techniques on a game-to-game basis. There are dozens of videos showing great 4x SLI scaling using the Titan Xp to run GTAV or TW3 in 8k, none of which, as it appears, has Linus Media Group even glossed over.

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